diff options
Diffstat (limited to 'src/cpu/x86/mtrr')
| -rw-r--r-- | src/cpu/x86/mtrr/mtrr.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/cpu/x86/mtrr/mtrr.c b/src/cpu/x86/mtrr/mtrr.c index 5f5e02bbb1..ed7d93bd06 100644 --- a/src/cpu/x86/mtrr/mtrr.c +++ b/src/cpu/x86/mtrr/mtrr.c @@ -265,13 +265,16 @@ static unsigned int range_to_mtrr(unsigned int reg, return reg; } - if (above4gb == 2 && type == MTRR_TYPE_WRBACK && range_sizek % 0x4000) { +#define MIN_ALIGN 0x10000 /* 64MB */ + + if (above4gb == 2 && type == MTRR_TYPE_WRBACK && + range_sizek > MIN_ALIGN && range_sizek % MIN_ALIGN) { /* - * If this range is not divisible by 16MB then instead + * If this range is not divisible then instead * make a larger range and carve out an uncached hole. */ hole_startk = range_startk + range_sizek; - hole_sizek = 0x4000 - (range_sizek % 0x4000); + hole_sizek = MIN_ALIGN - (range_sizek % MIN_ALIGN); range_sizek += hole_sizek; } |